Chapter 1: Explore the Network Introduction to Networks v5.1
Chapter Outline 1.0 Introduction 1.1 Globally Connected 1.2 LANs, WANs, and the Internet 1.3 The Network as a Platform 1.4 The Changing Network Environment 1.5 Summary Chapter Outline
Section 1.1: Globally Connected Upon completion of this section, you should be able to: Explain how networks affect the way we interact, learn, work, and play. Explain how host devices can be used as clients, servers, or both.
Topic 1.1.1: Networking Today
Networks in Our Daily Lives
Technology Then and Now
No Boundaries Networks support the way we: Learn Communicate Work Play 1.1.1.5 Networks Support the Way We Communicate 1.1.1.6 Networks Support the Way We Work 1.1.1.7 Networks Support the Way We Play 1.1.1.8 Lab - Researching Network Collaboration Tools
Topic 1.1.2: Providing Resources in a Network
Networks of Many Sizes 1.1.2.1 Networks of Many Sizes
Clients and Servers 1.1.2.2 Clients and Servers
Peer-to-Peer 1.1.2.3 Peer-to-Peer
Section 1.2: LANs, WANs, and the Internet Upon completion of this section, you should be able to: Explain the use of network devices. Compare the devices and topologies of a LAN to the devices and topologies of a WAN. Describe the basic structure of the Internet. Explain how LANs and WANs interconnect to the Internet.
Topic 1.2.1: Network Components
Overview of Network Components
Overview of Network Components (cont.)
Overview of Network Components (cont.)
End Devices 1.2.1.2 End Devices
Intermediary Network Devices
Network Media 1.2.1.4 Network Media
Network Media (cont.) 1.2.1.4 Network Media (Cont.)
Network Representations
Network Representations (Cont.) Network Interface Card 1.2.1.5 Network Representations (Cont.)
Topology Diagrams Physical Topology 1.2.1.6 Topology Diagrams
Topology Diagrams (Cont.) Logical Topology 1.2.1.6 Topology Diagrams (Cont.) 1.2.1.7 Activity – Network Component Representations and Fucntions
Topic 1.2.2: LANs and WANs
Types of Networks 1.2.2.1 Types of Networks
Types of Networks The two most common types of network infrastructures are: Local Area Network (LAN) Wide Area Network (WAN) Other types of networks include: Metropolitan Area Network (MAN) Wireless LAN (WLAN) Storage Area Network (SAN) 1.2.2.1 Types of Networks (Cont.)
Local Area Networks 1.2.2.2 Local Area Networks
Wide Area Networks LANs separated by geographic distance are connected by a network known as a WAN. 1.2.2.3 Wide Area Networks
Topic 1.2.3: The Internet, Intranets, and Extranets
The Internet LANs use WAN services to interconnect.
Intranets and Extranets
Topic 1.2.4: Internet Connections
Internet Access Technologies Internet Service Provider (ISP) Broadband cable Broadband Digital Subscriber Line (DSL) Wireless WANs Mobile Services Business DSL Leased Lines Metro Ethernet 1.2.4.1 Internet Access Technologies
Home and Small Office Internet Connections
Business Internet Connections 1.2.4.4 Packet Tracer – Help and Navigation Tips 1.2.4.5 Packet Tracer – Network Representation
Section 1.3: The Network as a Platform Upon completion of this section, you should be able to: Explain the concept of a converged network. Describe the four basic requirements of a reliable network.
Topic 1.3.1: Converged Networks
Traditional Separate Networks
The Converging Networks 1.3.1.3 Lab – Researching Converged Network Services
Topic 1.3.2: Reliable Networks
Network Architecture 1.3.2.1 Network Architecture
Fault Tolerance 1.3.2.2 Fault Tolerance
Scalability 1.3.2.3 Scalability
Quality of Service 1.3.2.4 Quality of Service
Security 1.3.2.5 Security
Security (cont.) 1.3.2.5 Security (Cont.) 1.3.2.6 Activity – Network Architecture Requirements
Section 1.4: The Changing Network Environment Upon completion of this section, you should be able to: Explain how trends such as BYOD, online collaboration, video, and cloud computing are changing the way we interact. Explain how networking technologies are changing the home environment. Identify basic security threats and solutions for both small and large networks. Describe the importance of understanding the underlying switching and routing infrastructure of a network.
Topic 1.4.1: Network Trends
New Trends Top trends include: Bring Your Own Device (BYOD) Online collaboration Video communications Cloud computing 1.4.1.1 New Trends
Bring Your Own Device 1.4.1.2 Bring Your Own Device
Online Collaboration 1.4.1.3 Online Collaboration
Video Communication 1.4.1.4 Video Communication
Cloud Computing 1.4.1.5 Cloud Computing
Topic 1.4.2: Networking Technologies for the Home
Technology Trends in the Home
Powerline Networking 1.4.2.2 Powerline Networking
Wireless Broadband 1.4.2.3 Wireless Broadband
Topic 1.4.3: Network Security
Security Threats 1.4.3.1 Security Threats
Security Threats The most common external threats to networks include: Viruses, worms, and Trojan horses Spyware and adware Zero-day attacks, also called zero-hour attacks Hacker attacks Denial of service attacks Data interception and theft Identity theft 1.4.3.1 Security Threats (Cont.)
Security Solutions Minimum solutions: Antivirus and antispyware Firewall filtering Additional solutions: Dedicated firewall systems Access control lists (ACL) Intrusion prevention systems (IPS) Virtual Private Networks (VPNs) 1.4.3.2 Security Solutions 1.4.3.3 Activity – Identify Network Security Terminology
Topic 1.4.4: Network Architecture
Cisco Network Architecture
CCNA 1.4.4.2 CCNA 1.4.4.3 Lab – Researching IT and Networking Job Opportunities
Section 1.5: Summary Chapter Objectives: Explain how multiple networks are used in everyday life. Describe the topologies and devices used in a small to medium-sized business network. Explain the basic characteristics of a network that supports communication in a small to medium-sized business. Explain trends in networking that will affect the use of networks in small to medium-sized businesses. 1.5.1.1 Class Activity – Draw Your Concept of the Internet Now 1.5.1.2 Video - Warriors of the Net 1.5.1.3 Chapter 1: Exploring the Network